Nitric oxide in the dorsal periaqueductal gray mediates the panic-like escape response evoked by exposure to hypoxia - Fernandes, Gabriel Gripp; Frias, Alana Tercino; Spiacci Junior, Ailton; Pinheiro, Lucas Cezar; Tanus-Santos, José Eduardo; Zangrossi Junior, Hélio (Progress in Neuro-Psychopharmacology and Biological Psychiatry, 2019)